Diodes Incorporated introduces its first automotive-compliant 3D linear Hall effect sensor. The AH4930Q detects the magnetic field in the X, Y, and Z directions, allowing for reliable and high-precision contactless rotary motion and proximity detection. Applications include rotary and push selectors on infotainment systems, stalk gear shifters, door handles and locks, and powered seat adjusters.
The AH4930Q integrates a 12-bit temperature sensor for accurate on-chip compensation. Its robust signal path and 12-bit data converter via ADC provide high resolution for each measurement direction down to 1 Gauss (0.1 mT) per bit for precise positional accuracy. The implemented I2C interface enables seamless communication for measurement data reading and runtime programming with host systems as fast as 1 Mbps to support real-time adjustments.
The device has three operating modes plus a power-down mode where it consumes only 9 nA. Its three operating modes provide a power consumption-data acquisition compromise, including an ultra-low-power mode consuming only 13 µA (10 Hz), to its fast-sampling mode of 3.8 mA (3.3 kHz) for constant measurement functionality. With a 10 µs wake-up time, 4 µs response time, and wide bandwidth, the AH4930Q delivers ultra-fast data acquisition even for the most demanding applications.
The AH4930Q operates on supply voltages from 2.8 V to 5.5 V, and a temperature range from –40 °C to +125 °C. The 3D linear Hall effect sensor is housed in the industry-standard 6-pin SOT26 (Type A1) package and is available at $0.50 for 1,000-piece quantities. A standard-compliance version, the AH4930, is also available for industrial and commercial applications.
